Datasheet BM90 (Microchip)
| Manufacturer | Microchip |
| Description | Bluetooth 3.0 Multi-Speaker Stereo Audio Module |
| Pages / Page | 31 / 1 — Bluetooth® 3.0 Multi-Speaker Stereo Audio Module. Features. Audio Codec. … |
| File Format / Size | PDF / 1.7 Mb |
| Document Language | English |
Bluetooth® 3.0 Multi-Speaker Stereo Audio Module. Features. Audio Codec. System Specification. Peripherals. Baseband Hardware
Model Line for this Datasheet
Text Version of Document
BM90
Bluetooth® 3.0 Multi-Speaker Stereo Audio Module Features Audio Codec
16 bit DAC and 16 bit ADC codec
System Specification
94dB SNR DAC playback Compliant with Bluetooth Specification v.3.0 + EDR in 2.4 GHz ISM band module 85 dB SNR ADC. It supports following profiles : - Hands Free 1.5
Peripherals
- Headset 1.0 Built-in Lithium-ion battery charger (up to 350mA) - A2DP 1.0 - AVRCP 1.0 Integrate 3V, 1.8V configurable switching regulator and LDO
Baseband Hardware
Built-in ADC for battery monitor and voltage sense. Built-in 16MHz main clock input. A line-in port for external audio input Built-in internal ROM for program memory Two LED drivers Support to connect to two hosts ( phones, tablets…) Built-in 32Kb EEPROM with HFP or A2DP profiles simultaneously Adaptive Frequency Hopping (AFH) avoids
Flexible HCI interface
occupied RF channels High speed HCI-UART (Universal Asynchronous Fast Connection supported Receiver Transmitter) interface (up to 921600bps)
RF Hardware
Fully Bluetooth 3.0 + EDR system in 2.4 GHz ISM band. Combined TX/RX RF terminal simplifies external matching and reduces external antenna switches. Max. +4dBm output power with 20 dB level control from register control. Built-in T/R switch for Class 2/3 application To avoid temperature variation, temperature sensor with temperature calibration is utilized into bias current and gain control. Fully integrated synthesizer has been created. There requires no external VCO, varactor diode, resonator and loop filter. Crystal oscillation with built-in digital trimming for temperature/process variations.
Package
Built-in PCB antenna. 15x29mm2 40 pins package
Audio processor Description
Support A-Law or -Law PCM format, or CVSD (Continuous Variable Slope Delta Modulation) for BM90 multi-speaker stereo audio module is a SCO channel operation. compact, highly integrated module for Bluetooth v3.0 Noise suppression with Enhanced Data Rate 2.4GHz applications. This Echo suppression module is fully compliant with Bluetooth specification SBC decoding and completely backward-compatible with Bluetooth 2.0 or 1.2 systems. Packet loss concealment Build-in one languages (English) voice prompts and It incorporates IS1690S multi-speaker stereo audio 20 events for each one chip, 32Kb EEPROM, PCB antenna, and ISSC’s own Bluetooth software stack to achieve the required BT Support SCMS-T v3.0 with EDR functions. page 1 Document Outline Bluetooth® 3.0 Multi-Speaker Stereo Audio Module Features Description Applications Table of Contents 1.0 DEVICE OVERVIEW FIGURE 1-1: APPLICATION BLOCK DIAGRAM Audio Interface FIGURE 1-2: Analog audio interface block diagram FIGURE 1-3: Twin Speaker Link block diagram 2.0 Key Features Table 3.0 PIN DESCRIPTION TABLE 3-1: BM90 PIN DESCRIPTION 4.0 SPECIFICATIONS 4.1 SPECIFICATIONS Table 4-1: Absolute Maximum Specifications Table 4-2: Recommended operating condition Table 4-3: Battery Charger Table 4-4: LED driver Table 4-5: Digital IO Table 4-6: Audio codec Digital to Analogue Converter Table 4-7: Audio codec Analogue to Digital Converter Table 4-8: Transmitter section for BDR Table 4-9: Transmitter section for EDR Table 4-10: Receiver section for BDR Table 4-11: Receiver section for EDR 4.2 PRINTED ANTENNA PERFORMANCE Table 4-12: Antenna Parameters FIGURE 4-1: Antenna 3D radiation pattern @2441 MHz 4.3 BQTF INFORMATION FIGURE 4-2: BQTF Information 4.4 CURRENT CONSUMPTION Table 4-13: Single Mode current consumption Table 4-14: Twin Mode: Master current consumption Table 4-15: Twin Mode: Slave current consumption 5.0 APPLICATIONS 5.1 EXTERNAL CONFIGURATION FIGURE 5-1: External Configuration Header Connections TABLE 5-1: SYSTEM CONFIGURATION SETTINGS 5.2 LED DRIVER 5.3 FUNCTION OF PIN TABLE 5-2: IOs for Buttons TABLE 5-3: IOs for added functions 5.4 Adaptive Frequency Hopping (AFH) 5.5 MULTI-SPEAKER 5.5.1 TWIN SPEAKER LINK TECHNOLOGY INTRODUCTION 5.5.1.1 TWIN SPEAKER LINK Figure 5-2 A2DP Twin Speaker Link Diagram 5.6 Mounting Details 5.7 Module Dimension FIGURE 5-3: BM90 module FIGURE 5-4: Outline Dimension FIGURE 5-5: Module Foot print 5.8 Main Board Antenna Area Layout Guide FIGURE 5-6: Mother Board Antenna Area Layout Guide 5.9 RFLOW PROFILE 5.9.1Soldering Recommendations FIGURE 5-7: Reflow profile 6.0 REFERENCE CIRCUIT FIGURE 6-1: BM90 reference circuit 7.0 PACKING INFORMATION 7.1 QR code label information 7.2 Storage standard 7.3 Ordering Information 7.4 Tray Dimensions 7.5 Packing Method
Bluetooth® 3.0 Multi-Speaker Stereo Audio Module Features Audio Codec
16 bit DAC and 16 bit ADC codec
System Specification
94dB SNR DAC playback Compliant with Bluetooth Specification v.3.0 + EDR in 2.4 GHz ISM band module 85 dB SNR ADC. It supports following profiles : - Hands Free 1.5
Peripherals
- Headset 1.0 Built-in Lithium-ion battery charger (up to 350mA) - A2DP 1.0 - AVRCP 1.0 Integrate 3V, 1.8V configurable switching regulator and LDO
Baseband Hardware
Built-in ADC for battery monitor and voltage sense. Built-in 16MHz main clock input. A line-in port for external audio input Built-in internal ROM for program memory Two LED drivers Support to connect to two hosts ( phones, tablets…) Built-in 32Kb EEPROM with HFP or A2DP profiles simultaneously Adaptive Frequency Hopping (AFH) avoids
Flexible HCI interface
occupied RF channels High speed HCI-UART (Universal Asynchronous Fast Connection supported Receiver Transmitter) interface (up to 921600bps)
RF Hardware
Fully Bluetooth 3.0 + EDR system in 2.4 GHz ISM band. Combined TX/RX RF terminal simplifies external matching and reduces external antenna switches. Max. +4dBm output power with 20 dB level control from register control. Built-in T/R switch for Class 2/3 application To avoid temperature variation, temperature sensor with temperature calibration is utilized into bias current and gain control. Fully integrated synthesizer has been created. There requires no external VCO, varactor diode, resonator and loop filter. Crystal oscillation with built-in digital trimming for temperature/process variations.
Package
Built-in PCB antenna. 15x29mm2 40 pins package
Audio processor Description
Support A-Law or -Law PCM format, or CVSD (Continuous Variable Slope Delta Modulation) for BM90 multi-speaker stereo audio module is a SCO channel operation. compact, highly integrated module for Bluetooth v3.0 Noise suppression with Enhanced Data Rate 2.4GHz applications. This Echo suppression module is fully compliant with Bluetooth specification SBC decoding and completely backward-compatible with Bluetooth 2.0 or 1.2 systems. Packet loss concealment Build-in one languages (English) voice prompts and It incorporates IS1690S multi-speaker stereo audio 20 events for each one chip, 32Kb EEPROM, PCB antenna, and ISSC’s own Bluetooth software stack to achieve the required BT Support SCMS-T v3.0 with EDR functions. page 1 Document Outline Bluetooth® 3.0 Multi-Speaker Stereo Audio Module Features Description Applications Table of Contents 1.0 DEVICE OVERVIEW FIGURE 1-1: APPLICATION BLOCK DIAGRAM Audio Interface FIGURE 1-2: Analog audio interface block diagram FIGURE 1-3: Twin Speaker Link block diagram 2.0 Key Features Table 3.0 PIN DESCRIPTION TABLE 3-1: BM90 PIN DESCRIPTION 4.0 SPECIFICATIONS 4.1 SPECIFICATIONS Table 4-1: Absolute Maximum Specifications Table 4-2: Recommended operating condition Table 4-3: Battery Charger Table 4-4: LED driver Table 4-5: Digital IO Table 4-6: Audio codec Digital to Analogue Converter Table 4-7: Audio codec Analogue to Digital Converter Table 4-8: Transmitter section for BDR Table 4-9: Transmitter section for EDR Table 4-10: Receiver section for BDR Table 4-11: Receiver section for EDR 4.2 PRINTED ANTENNA PERFORMANCE Table 4-12: Antenna Parameters FIGURE 4-1: Antenna 3D radiation pattern @2441 MHz 4.3 BQTF INFORMATION FIGURE 4-2: BQTF Information 4.4 CURRENT CONSUMPTION Table 4-13: Single Mode current consumption Table 4-14: Twin Mode: Master current consumption Table 4-15: Twin Mode: Slave current consumption 5.0 APPLICATIONS 5.1 EXTERNAL CONFIGURATION FIGURE 5-1: External Configuration Header Connections TABLE 5-1: SYSTEM CONFIGURATION SETTINGS 5.2 LED DRIVER 5.3 FUNCTION OF PIN TABLE 5-2: IOs for Buttons TABLE 5-3: IOs for added functions 5.4 Adaptive Frequency Hopping (AFH) 5.5 MULTI-SPEAKER 5.5.1 TWIN SPEAKER LINK TECHNOLOGY INTRODUCTION 5.5.1.1 TWIN SPEAKER LINK Figure 5-2 A2DP Twin Speaker Link Diagram 5.6 Mounting Details 5.7 Module Dimension FIGURE 5-3: BM90 module FIGURE 5-4: Outline Dimension FIGURE 5-5: Module Foot print 5.8 Main Board Antenna Area Layout Guide FIGURE 5-6: Mother Board Antenna Area Layout Guide 5.9 RFLOW PROFILE 5.9.1Soldering Recommendations FIGURE 5-7: Reflow profile 6.0 REFERENCE CIRCUIT FIGURE 6-1: BM90 reference circuit 7.0 PACKING INFORMATION 7.1 QR code label information 7.2 Storage standard 7.3 Ordering Information 7.4 Tray Dimensions 7.5 Packing Method
